Whether or not physical cooling rubbing liquor is beneficial depends mainly on the degree of fever and the group of people used to reduce fever. For adults, low fever choose white wine rubbing is an effective way to reduce fever, but should master the correct rubbing method, rubbing time and white wine ratio. Generally, you can choose 52 degrees of white wine plus 1 times the water, wipe the armpits, elbow nests, palms and other places. The limbs and back rub 3-5 minutes, all the time to rub bath for about 20 minutes. After rubbing, dry the skin with a dry towel and take the temperature after half an hour. If the infant fever, and belong to high fever, the use of white wine fever will bring more serious side effects. The hazards are as follows: 1, the alcohol content of white wine is high, and infants and young children’s skin is thin and tender, permeability, blood circulation is more exuberant, and the development of its liver and kidney function is imperfect, high fever, the whole body capillaries are in a state of dilation, rubbing white wine will make the alcohol through the skin is more easily absorbed, and caused by alcoholism; 2, the alcohol evaporates quickly, the surface of the body can be rapidly cooled down, the child may be shivering all over the body, thus causing the temperature to rise again; 3, part of the child’s fever will be brought to a more serious side effect. Again rise; 3, some children may be allergic to alcohol, and cause systemic adverse reactions, such as rashes, erythema, itching and so on. Severe cases will excite the vagus nerve, causing reflex heart rate slowing, and even cause ventricular fibrillation and conduction block and lead to cardiac arrest.